Apparatus for raising and forcing liquids.



LKOERVER. APPARATUS FOR RAISING AND FORCING LIQUIDS.

APPLICATION FILED JUNE 19, 1912.

' Patented Jan.7,1913,

COLUMBIA PLANOGRAPM CL\..WASHINGTON. D. c.

JOSEF KOERVER, or GREFELD, GERMANY.

APPARATUS FOR RAISING AND FORCING LIQUIDS.

Specification of Letters Patent.

Patented J an. '7, 1913.

Application filed June 19, 1912. Serial No. 704,701.

To all whom it may concern.

Be it known that I, J osnr Konnvnn, a subject of the Emperor of Germany, residing at Crefeld, in the Empire of Germany, have invented a new and useful Apparatus for Raising and Forcing Liquids, of which I declare the following to be a full, clear, and exact description.

The present invention relates to an apparatus for raising andforcing liquids by means of compressed air.

According to the invention as soon as all the liquid has been conveyed from the chamber the air pressure increases and this increase of pressure serves to move the reg I ulating valve into the discharge position. The pressure of the air, according to the present invention is exerted in the compressed air pipe itself, while the air is not forced out into the external atmosphere but is led again to the compressor or air pump.

The apparatus comprises an ordinary compressor which supplies compressed air through a speciallyconstrueted regulating valve to a number of chambers where it acts on a volume of water supplied to the chambers from a reservoir, to raise or force this water to a higher level.

The invention is illustrated by way 0 example in the drawing, wherein Figure 1 shows a chamber, with the compressed air supply pipe connected, in section; and Fig. 2 the regulating valve in section.

The regulating valve comprises a slide valve 71 and a piston 2' arranged in a commen casing; the slide valve is supplied with compressed air from the compressor through supply pipe at. The exhaust pipe (Z of the slide valve is also connected with the compressor, and the admission ports 6, e are each connected with one or more chambers of the kind shown in Fig. 1. Besides this the ports 6 e are connected by narrow ducts g, g with the piston cylinder f. The slide valve h and the piston 71 are connected together outside the casing as shown in the drawing and providedwith a weight Z for the purpose hereinafter described. According therefore to the position of the slide valve the compressed air from a is supplied to the chamber or chambers connected with either e or e and the water is raised in these chambers by the compressed air.

A suitable form of chamber is shown in Fig. 1, in which a pipe containing a flap valve m leads into the chamber from a liquid reservoir which is situated at a higher level than such chamber.

7) is the inlet for the compressed air adapted to be closed by a valve or ball 0 which is connected with a float n. In order to prevent the ball from closing the air inlet pipe a guide 9 is arranged in the chamber at such a height that the float a, as the surface of the water rises in the reservoir, cannot rise high enough to close the inlet pipe.

k is the delivery pipe through which the water is raised or forced, which is closed by a non-return valve 7.

The apparatus works as follows :According to the position of the slide valve 71. and the piston a water enters the chamber connected with air pipe 0, since no air pressure is exerted on this and it lies below the surface of the water in the reservoir, while in the chamber or chambers connected wit-h the air pipe 6 the water is raised in the pipe 70 through the valve r by the compressed air until the ball or valve 0 closes the air inlet pipe at p by the dropping of the level of the water from the chamber. As soon as the valve 0 is closed the pressure of the air in a. rises. As long as the compressed air forces the liquid from the supply reservoir into the pipe 7" the pressure of the compressed air expressed in atmospheres corresponds to the column of liquid. Assuming that water is raised 30 meters, then an air pressure of 3 atmospheres is necessary in order to force the liquid out of the reservoir. As long as the liquid is being forced out the air pressure remains constant at 3 atmospheres. Directly however the valve 0 is closed, the air in the air supply pipe is compressed beyond 3 atmospheres, since the compressor or air pump continues to work. The compressed air passing through the narrow duct 9 now forces down the piston z and so raises the slide valve 71,, a process which as soon as the weight Z has passed the dead point is accelerated owing to the weight of the latter and a reversal of the regulation is elfected, that is the compressed air now flows through c and into the other chamber or chambers, while the air from the former chambers is again returned through pipe 6 and the 6X- haust cl to the compressor. When the pressure is released the valve or flap r is again closed by the weight of the column of water resting on it, while the air from the chamher is again drawn off through the exhaust pipe by the compressor and the water again enters the chamber. It is thus clear that it is possible by this method even with only a small pressure, for example 5 atmospheres, to force water or any other. liquid to any desired height. It is only necessary to insert at suitable intervals (50m.) one or more chambers.

I claim: 7 v

1. A device of the character described, comprising a valve casing having a pair of chambers, a piston and a slide valve movable respectively therein and operatively connected to each other, means for admitting compressed air to the valve chamber, a vessel adapted to contain the liquid to be raised, a port connecting the valve chamber to said vessel, and a duct connecting said port to the piston chamber.

2. A device of the character described, comprising a valve casing having a pair of chambers, a piston and a slide valve movable respectively therein and operatively connected to each other, means for admitting compressed air to the valve chamber, a

vessel adapted to contain the liquid to be raised, a port connecting the valve chamher to said vessel, an additional valve controlling communication between said port and vessel, a float within the vessel and operatively connected to the last named valve, and a duct connecting the port to the piston chamber. a I

3. A device of the character described, comprising a vessel adapted to contain the liquid to be raised, a compressed air inlet pipe entering said vessel, a .float valve adapted to close said inlet pipe upon a descent of the liquid, a compressed air supply pipe, an exhaust pipe, a valve controlling communication between said supply pipe and inlet pipe, and means actuated upon an increased air pressure generated within the supply pipe upon the closing of the float valve for disconnecting the inlet pipe from the supply pipe and for connecting the inlet pipe to the exhaust pipe.

1 JOSEF KOERVER.

Vitnesses:

ELISE KoELBURoH, HENRY QUADFLIEG.

Copies ot'this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

